Tag: Statistics

Statistical Notes (3B): Confidence Intervals for Binomial Proportion Using SAS, Updated

This quick note serves as a supplementnote of my previous Statistical Notes (3): Confidence Intervals for Binomial Proportion Using SAS which I will extend as a SESUG 2015 paper. Basically I added a new Blaker method to my CI_Single_Proportion.sas file and found more CIs from SAS PROC FREQ. First of all, call the script: filename […]

Calculating Covariance by SAS, A Brutal Way

It was very disappointed that there is only one built-in method to calculate covariance in Base SAS: that’s in PROC CORR (while you can also do it in SAS/IML, of course): The following is a quick-and-dirty way to get a function like %COV: %macro COV(data, var1,var2); %local _cov; %let rc = %sysfunc(dosubl(%str(     ods output […]

Confidence Intervals for Binomial Proportion (Again): A Quick Note

In Lex’s library of the latest SAS Global Forum 2015 papers, I found an interesting paper by Wu Gong, Jeffreys Interval for One-Sample Proportion with SAS/STAT Software, where SAS MCMC procedure and a so called Random Walk Metropolis Algorithm were implemented to calculate the Jeffreys interval for binomial proportion. Years ago I wrote several posts […]

It’s Analytics Survey Time!

Every other year Rexer Analytics surveys Data Analysts, Predictive Modelers, Data Scientists, Data Miners, and all other types of analytic professionals, students, and academics regarding the software they use.  I then update the main results in The Popularity of Data Analysis … Continue reading